pthread_schedparam.3 revision 79754
Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
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$FreeBSD: head/share/man/man3/pthread_schedparam.3 79754 2001-07-15 07:53:42Z dd $
.Dd May 1, 2000 .Dt PTHREAD_SCHEDPARAM 3 .Os .Sh NAME .Nm pthread_setschedparam , .Nm pthread_getschedparam .Nd thread scheduling parameter manipulation .Sh LIBRARY .Lb libc_r .Sh SYNOPSIS .Fd #include <pthread.h> .Ft int .Fn pthread_setschedparam "pthread_t thread" "int policy" "const struct sched_param *param" .Ft int .Fn pthread_getschedparam "pthread_t thread" "int *policy" "struct sched_param *param" .Sh DESCRIPTION The .Fn pthread_setschedparam and .Fn pthread_getschedparam functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can either be .Dv SCHED_FIFO (first in, first out) or .Dv SCHED_RR (round-robin). The thread priority (accessed via .Va param->sched_priority ) must be at least .Dv PTHREAD_MIN_PRIORITY and no more than .Dv PTHREAD_MAX_PRIORITY . .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS .Fn pthread_setschedparam will fail if: l -tag -width Er t Bq Er EINVAL Invalid value for .Va policy . t Bq Er ENOTSUP Invalid value for scheduling parameters. t Bq Er ESRCH Non-existent thread .Va thread . .El
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice(s), this list of conditions and the following disclaimer as
the first lines of this file unmodified other than the possible
addition of one or more copyright notices.
2. Redistributions in binary form must reproduce the above copyright
notice(s), this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$FreeBSD: head/share/man/man3/pthread_schedparam.3 79754 2001-07-15 07:53:42Z dd $
.Dd May 1, 2000 .Dt PTHREAD_SCHEDPARAM 3 .Os .Sh NAME .Nm pthread_setschedparam , .Nm pthread_getschedparam .Nd thread scheduling parameter manipulation .Sh LIBRARY .Lb libc_r .Sh SYNOPSIS .Fd #include <pthread.h> .Ft int .Fn pthread_setschedparam "pthread_t thread" "int policy" "const struct sched_param *param" .Ft int .Fn pthread_getschedparam "pthread_t thread" "int *policy" "struct sched_param *param" .Sh DESCRIPTION The .Fn pthread_setschedparam and .Fn pthread_getschedparam functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can either be .Dv SCHED_FIFO (first in, first out) or .Dv SCHED_RR (round-robin). The thread priority (accessed via .Va param->sched_priority ) must be at least .Dv PTHREAD_MIN_PRIORITY and no more than .Dv PTHREAD_MAX_PRIORITY . .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS .Fn pthread_setschedparam will fail if: l -tag -width Er t Bq Er EINVAL Invalid value for .Va policy . t Bq Er ENOTSUP Invalid value for scheduling parameters. t Bq Er ESRCH Non-existent thread .Va thread . .El
p .Fn pthread_getschedparam will fail if: l -tag -width Er t Bq Er ESRCH Non-existent thread .Va thread . .El .Sh STANDARDS .Fn pthread_setschedparam and .Fn pthread_getschedparam conform to .St -susv2